Labd-lamp



R. CORNELiUS.

- Lard Lamp.

Pl'tented` April G, 1843.

su is: b

wKnN,

light is dependent.

UNITED STAWENT orrrcit.

ROBERT CORNELIUS, OF PHILADELPHIA, PENNSYLVANIA.

LARIO-LAMP.

Specification of Letters Patent No. 3,030, dated April 6, 1843; Antedated April 1, 1843.

burning of -lard'jand other fatty substances,

the general aim has been to conduct a large portion of the heat produced bythe ilame immediately into the body of the lamp, so as to produce a complete fusion of t-he lard &c; and when this has been effected, there has, necessarily, resulted such a diminution ot heat at the point of ignition as has interfered materially with the intensity of combustion upon which the brilliancy of the various forms, a principal aim has been to conduct no more heat down from the flame than is necessary to fuse the lard in the vicinity of the wick; and this I have etfected to such extent as to obtain aV light from lard equally intense with that usually obtained from the best sperm oil.

In the accompanying drawing, I have shown two modifications of my wick support, the first being merely the wick, and the parts necessary to sustain it when placed within a common cup; the second, a common hand lamp, having a wick similarly arranged.

Figure l, represents the wick and its support as ready to be inserted in any suitable cup, or vessel, containing lard, &c.

A, is a metallic plate to which is attached the two arms, B, B, which may consist ot strips of tin plate, that are to rest on the edges of the cup. From the center of the piece A, a flat plate of copper rises, the top of which is shown at C, and upon this a hollow wick, D, may be slipped. E, is a strip ot metal borne up against the wick by a spring piece,`F, there being a similar support on the opposite side. The wick, D, although shown as standing below the top of the strip, C, is to be on a level with, or a trifle above, it, when the lamp is in use; and under this arrangement, the lard in the immediate vicinity of the wick will be sufficiently fused to ascend by capillary attraction, while the portion of heat conducted down by it will be but small. The use of In my lamp, under itsy the strips, E, is merely to keep the wick in cont-act with the plate, C; and it is not necessary that the wick should actually encompass this plate, as a strip of canton flannel, or other analogous substance, on each side of it will answer equally well. This wick may be` raised with the most perfect tacility.

Fig. 2, represents a section through a common hand lamp, within the body of which the wick is inserted, instead of putting it into a common cup. In this case, instead ot' the plate A, shown in Fig. l, the spring' strips, B, B, say three sixteenths of an inch wide, are in one piece, and their lower part, A, has the strip ot copper C, fastened to it. Whenthe wick is in place, surrounding the plate of copper, C, t-he whole may be forced down into the lamp,

through the concrete lard, without disturbing the wick, the bottonn'rx, making a tree passage for it. The wick is guided, and held in place, by passing it into the square, tubular opening G, Fig. 3, in the top of the lamp; the edges, H, H, of which constitute grooves that embrace the edges ot' the wick,

which, however, is exposed on each side to Y Having thus fully described the nature of my invention in the manner of forming and arranging the metallic support of wicks for ordinary lamps, which are intended for the burning of lard, and other concret-e fatty matters, what I'claim therein as new, and desire to secure by Letters Patent, is-

The so arranging of the metallic plat-e which supports the wick, and by which the requisite amount ot heat is to be conducted downward, as that no more heat shall be carried oit by it, or by the parts to which it is appended, than shall beV requisite to fusethe lard in the neighborhood thereof; the same being eitected by placing the metallic plate C, within the wick, and by combining the respective parts with each other substantially in the manner herein set forth.

ROBERTV CORNELIUS. Witnesses:

Trios. P. JoNns, Jol-IN Hirn. 

